Haunted Hills additions

This pack adds animated textures to some log blocks of the haunted hills pack, to give them a haunted tree feel. They generate randomly throught the world.

Uses unused shroom, leaf litter and twigs textures to make grass block blockstates.

Adds the grass texture from version 0.1 which is missing on the v0.2 of Haunted Hills.

The oak eye is from the halloween mashup pack. And the spruce face aswell, i only gave it a small animation.

The birch eye is original from this pack.